Scott do you also mount the queue dir's from the netapp ???
----- Original Message ----- From: "Scott Helms" <[EMAIL PROTECTED]> To: "Duane Wylie" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Monday, December 30, 2002 11:16 AM Subject: Re: [vchkpw] vpopmail clustering examples > Duane, > > We use Alteons to do the load balancing and a pair of NetApp F810c's for > the HA NFS system. I won't include any details since its easy enough to get > the data from the guys at Netapp. We run 7 qmail/vpopmail servers with 3 > mysql servers (one master and 2 slaves that are read only). > > Scott > ----- Original Message ----- > From: "Duane Wylie" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Monday, December 30, 2002 1:41 PM > Subject: RE: [vchkpw] vpopmail clustering examples > > > > Sorry 'bout sending that last message as 'Super-User'... > > > > We're using F5's load balancer and it's been working great for us. It has > > similar features as the Foundry switch you mentioned (and the service > > monitoring is great!). > > > > The main worry I have at this point is the NFS server. Even though the > file > > system in question is RAID 5, and is in a separate disk enclosure, I don't > > like having that one NFS server as a single point of failure. > > > > Is anyone using some sort of HA storage solution? If so, care to share > > details? > > > > Thanks, > > Duane Wylie > > > > -----Original Message----- > > From: Andre Fortin [mailto:[EMAIL PROTECTED]] > > Sent: Monday, December 30, 2002 11:53 AM > > To: [EMAIL PROTECTED] > > Subject: RE: [vchkpw] vpopmail clustering examples > > > > > > We have a very similar set up. We have a third machine as the MySQL > master > > which doesnt directly interact as a mail server, but it makes the MySQL > > database triple-redundant without sacrificing performance. > > > > For load balancing/redundancy, we are using Foundry > > (http://www.foundrynetworks.com/) switches with the SLB (Server Load > > Balancing) code. Very powerful; it not only detects if the server is > > running, or listening to port 25/110, but it actually understands SMTP and > > POP3 and will make sure the SMTP and POP3 servers are responding properly > as > > part of its 'heartbeat' tests.. So, for example, if you had a machine that > > had a problem and would still listen to port 25 but couldnt actually > answer > > with a '220', it would be treated as 'offline' instead of opening dead > > connections for clients.. It also allows you to load balance between X > > number of servers rather than just failing over in 'worst case scenario' > > situations.. > > > > Andre > > > > > > > > >
